algorithm>using namespace std;bool isfriend(string a, string b)
include iostream>usingnamespacestd;voidbubblesort(inta[],int
iostream>#include string>#include algorithm>usingnamespacestd
h>//用sort需要的#include algorithm>usingnamespacestd;intmain()
namespace std;#definem 100#definen 100boolcompare(chara[],charb
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